Ventral view of female showing the orange hour glass. Fullerton, Orange County, CA. 10/25/06. © Lenny Vincent, Fullerton College, Fullerton, California.

Brown widow

Latrodectus geometricus

Araneae: Theridiidae

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Male. Orange, Orange County, CA. © Lenny Vincent, Fullerton College, Fullerton, California.

Male (left) and female (right) showing sexual dimorphism. Orange, Orange County, CA. © Lenny Vincent, Fullerton College, Fullerton, California.

Adult male (size ~3 mm) showing coiled pedipalps. Laguna Beach, Orange County, CA. 6/21/09. © Lenny Vincent, Fullerton College, Fullerton, California.

Male. Irvine, Orange County, CA. 11/2/08. © Ron Hemberger

Female. Huntington Beach, Orange County, CA. 11/30/06. © Lenny Vincent, Fullerton College, Fullerton, California.

The spiked egg sacs belong to the brown widow. The larger and smoother egg sac is from a black widow. Note the exit holes. The brown widow eggs sacs were collected in Brea, Orange County, CA, 1 Sept, 2006. © Lenny Vincent, Fullerton College, Fullerton, California.

Female with egg sacs. Santa Ana, Orange County, CA. 05-09-07. © Peter J. Bryant.

Female with egg sacs. Santa Ana, Orange County, CA. 05-09-07. © Peter J. Bryant.

Female. Santa Ana, Orange County, CA. 05-09-07. © Peter J. Bryant.

Female. Santa Ana, Orange County, CA. 05-09-07. © Peter J. Bryant.

Female with egg sacs. Santa Ana, Orange County, CA. 05-09-07. © Peter J. Bryant.

Female. Santa Ana, Orange County, CA. 05-09-07. © Peter J. Bryant.

Female with egg sacs. Santa Ana, Orange County, CA. 05-09-07. © Peter J. Bryant.

Egg sacs and hatchlings. Laguna Beach, Orange County, CA. 05-27-07. © Peter J. Bryant.

Hatchlings. Laguna Beach, Orange County, CA. 05-27-07. © Peter J. Bryant.

Hatchlings. Laguna Beach, Orange County, CA. 05-27-07. © Peter J. Bryant.

Female with egg sacs. Orange, Orange County, CA. 08-06-07. © Peter J. Bryant.

Female with egg sac. Orange, Orange County, CA. 08-06-07. © Peter J. Bryant.